3 cyclic communication 3-19 – KEYENCE DL-EP1 User Manual

Page 47

3-3 Cyclic communication

3-19

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- EtherNet/IP Compatible Network Unit DL-EP1 User’s Manual (FD-MH) -

Reading the current value (instantaneous flow rate) of the sensor
amplifier

The current value (instantaneous flow rate) is read from the IN area to which the ID

number of each sensor amplifier is assigned.

Device assignments:

"Monitor Data (84 Words (168 Bytes)) Assembly Instance

(Instance ID): 64H" (Page 3-9)

This example shows how to read the current value from the sensor amplifiers ID01,

ID02, and ID03.
(1)When the current value of a sensor amplifier is updated, the new comparator

value is entered into the IN area via cyclic communication.

* If the current value is over range, under range, or invalid, the previous value is

retained without updating the current value. Use the value with the current value

property.

(2)The property of the current value is entered. If the current value is "over (FFFF)" or

"invalid (----)", the bit corresponding to the ID number of the appropriate sensor

amplifier is set to 1.

* For the FD-MH Series, the current value (instantaneous flow rate) is stored in the

current value 0.

PLC

(2)

Comparator value property
Each bit of IN [6, 8,10]

Comparator value of ID 01

1234

4567

6789

IN area [48 to 51]

Comparator value of ID 02

2345

5678

7890

IN area [52 to 55]

Comparator value of ID 03

3456

8901

IN area [56 to 59]

Sensor amplifier